Fuel-valve for internal-combustion engines.



G. 0. TOBIA S. FUEL VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APB.22,.1910.-

Patented Jan. 17,1911.

2 SHEETS-$HEET 1.

G. 0. TOBIAS. FUEL VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR.22. 1910.

' Patented Jan. 17, 1911 llllm ill avg wen 130 UNITED STATES PATENT OFFICE.

GUY roams, or-oLmTon, MISSOURI.

FUEL-VALVE FOR INTERNAL-COMBUSTION ENGINES.

To all whom it may concern: Be it known that I, GUY O. TOBIAS', citizen' of the United States, residing at Clinton, in the county of Henry and State of Missouri, have invented certain new and useful Improvements in F uel-Valvesfor Internal-Combustion Engines, of which the following is a specification.

This invention comprehends certain new,

parts of which may be easily mounted and readily assembled, and disassembled, should occasion require. And the invention has for a further object a simple fuel admission valve which moves freely througha rela tively long bearing in the valve casing, with no packing on the stem of the valve, thereby avoiding any liability to corrode and insuring that the valve will always seat perfectly, allowing no fuel to be wasted during the idle strokes of the engine.

- With theseand other objects in view as will more fully appear as the description proceeds, the invention consists in certain constructions, arrangements and cm'nbina- Mom of the parts that I shall hereinafter fully describe and claim.

For a full understanding of the invention, reference is to be had to the following descri 'tion and accom an in drawin s. inv

v l1 17 A which:

Figure 1 1s a perspectlve view 1llustrat ing the two main .parts of my fuel valve in drawn out relation to each other: and, Figs. .2 and 3 are sectional views at right angles to each other. showing the parts assembled. Corresponding and llke parts-are referred to in the following description and indicated J in all the views of the drawings by the same reference characters. 2

- R'ferringto the'drawings, the numeral 1 designates a casing which is secured in any Specification of Letters Patent. Application filed April 22, 1910. Serial No. 557,037.

- indicated at 11.

Patented Jan. 17, 1911.

' desired way, as by stud bolts to an engine cylinder, not shown, said casingbeing provided at one end with'an air inlet port 3 and being provided at its opposite end with an opening 4 to receive the body portion 5 of the fuel valve. The body portion 5 is preferably a casting of bronze or the like,

and is hollow and substantially cylindrical,.

as shown, being provided at opposite sides with preferably co-extensive segmental openings 6 establishing commuuicationwith the interior of the casing 1 and the interior of the bodyportion. The body portion 5 is also formed at one end with oppositely beveled and correspondingly angular walls 7 and 8 which meet at the median line of the body portion, one of said walls being preferably iniperforate, while the other wall at its innermost end is formed with a transversely extending slot 9 establishing commu nication between the interior and exterior of the body portion at the end thereof. This end wall 8 is intersected by a tubular core 10 which is formed with a longitudinal opening extended therethrough and at the inner end of said opening with a preferably tapered' recess surrounding the walls of the opening and constituting a valve seat, as

The valve 12 is correspondingly tapered to gradually fit on the valve seat 11 and the stem 13 of the valve moves freely through the longitudinal opening of the core 10 and out through an exte-j rior extension of the core, being operatively connected in the ordinary manner to a cam on the side rod of the engine, whereby the valve is positively operated. Opening into the valve seat is a gasolene admission orifice 14 which opens from a passage 15 leading inwardly through the core 10 at an oblique angle to the longitudinal bore of the latter and leading from a preferably laterally disposed supply port 16 through which the gasolene passes from any desired source of supply. Mounted in the passage 15 is a needle valve 17 for throttling the gas'olene, said needle valve passingoutwardly through a gland 18 and being preferably provided at its outer end with a finger disk 19 displaying indicating numerals and provided with edge nicks or graduations designed to coact with a pointer arm 20 formed on the body portion 5,' asclearly illustrated in the drawings.

As seen'best in Fig. 3, the'casing 1 is formed with two chambers, namely, an inner fuel inlet chamber 21 in which the intake valve 22 is-mounted, and an outer air chamber 23 surrounding but distinct from the inner chamber 21. The wall which separates these two chambers is formed with an opening 24 establishing communication between them, this opening being preferablylocated in registry with and being preferably coextensive with the opening 4: before mentionedl In this opening 24 the inner end of the body portion 5 of the valve extends, while the openings 6 of the body portion 5 register with the space between the inner and outer walls of the casing. H

i From the foregoing description in connection with the accompanying drawing, the

operation of my improved fuel valve will be apparent. In the practical use of the device, the gasolene issuing from the orifices Has the valve 12 is'open, will be admitted into the inner chamber 21, and will be va-' .porized and absorbed by the inrushing air whigh enters the casing at the port Sand passes in opposite directions around the wall of theinner chamber 21 and in through both of the side openings 6 and out of the body portion into the chamber 21, through the transverse slot 9, the gaseous mixture thus formed being directed laterally, that is, toward the intake valve 22 and thence passed to the engine cylinder.

Having thus described the invention, what is claimed as new is:

1. In a'fuel valve mechanism for internal combustion engines, a casin formed'with outer and inner'chambers, with anair inlet opening leading to the outer chamber, with an opening leading into the outer chamber from a polnt opposite the airinlet opening, and with another opening establishing communication between the two chambers, the

last named opening'being in registry with the second-named opening. an intake valve in the inner chambeiya hollow valve body mounted in the second named opening and formed with, side'openings registering with the outer chamber, the inner end of said body extending into the opening which establishes communication between the two chambers. and having a slot which opens into the inner chamber, the valve body being further formed with a fueldischarge orifice in the inner chamber, and a valve controlling said orifice.

2. In a fuel valve mechanism for internal combustion engines, a casing formed with outer and inner chambers, with an air inlet opening leading to the outer chamber, with an opening leading into the outer chamber from a point opposite theair inlet opening,

and with another opening establishing communication between the twochambers, the lastnamed opening'being in registry with the second-named opening, an'intake valve in the inner chamber, a hollow valvebody mounted in the second-named opening and of a hollow valve bodyformed with :1. Ion I gitudinally extending bore and a fuel inlet passage, the bore being formed at one end with a valve seat communicating with said chamber and the passage .with an orifice communicating with said seat, a valve adapted to close on said seat to cut off the orifice and provided with a stem movable throughthe bore, and a needle valve mounted in the fuel passage, the body bein formed with an-oppositely beveled rear en one wall-of which is provided with a slot communicating directly with the valve seat and orifice, and the body being further formed with a side air inlet openin leadin to the valveseat, substantially as escribe 4. In fuel valve mechanism for internal combustion engines,.the combination with a casing provided with a fuel inlet chamber,-

of a hollow valve body formed with a longitudinally extending bore, and a fuel inlet r passage, the bore being formed'at-one end with a valve-seat communicating with said chamber and the passage formed with an orifice communicating with said seat, a valve adapted to close on said seat to cut off the orifice and provided with a stem movable through the bore, and a needle valve mounted in the :fuel passage, the body being formed with an oppositely beveled inner end-lone wall of which is provided with a slot communicating directly with the valve seat and orifice, and the body being further formed with two oppositely disposed side openings adapted to admit air into the interior ofv the body portion;

5. In fuel'valve mechanism for internal combustion engines, the combination with a casing provided with a fuel inlet chamber of a hollow valve body formed with a. side air inlet opening and having an end slot the said body being secured to the casing and formed with a valve seat and fuel inlet orifices communicating with said slot and with the said chamber. a valve adapted to I rest on said seat to close the orifice,'and

another valve controlling the passage of fuel to the orifice. 1

6. In fuel valve mechanism for internal combustion engines, the combination with a casing formed with a fuel inlet chamber, of

a hollow valve body secured to said casg and formediwith dppositely inclined w at one end, one of saidwalls being formed vided with a stem mounted for a longitudiwith 11* transverse slot opening into said nal movement In the bore, and a needle valve chamber, with a valve seat and a fnel'inlet. mounted in the passage.

orifice communicatingv with said slot and In testimony whereof, I affix my signature 5 with a -long1tud1nally extending); bore and in presence of two witnesses.

m obliquely e\tend1n com, the fgnmer GUY O TOBIAS. [17. SJ

being -fori'ned with a bore, leading to the i valve seat, and the latter beingpi'ovided with 'itnesses:

:1 fuel inlet passage leading to the orifice, a I FRANK M. HART, 10 valve adapted to rest on said seat and pro- 'WILLIAM 1(IMBALL. 

